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1.1 ,This specification2 establishes the requirements for seamless round, rectangular, and square copper tube suitable for general engineering applications.
1.1.1 ,Tubes made from any of the following Copper UNS No. designations shall be supplied unless otherwise specified in the contract or purchase order:
| Copper UNS No. | Type of Copper |
| , | , |
| C10100 | Oxygen-free electronic |
| C10200 | Oxygen-free without residual deoxidants |
| C10300 | Oxygen-free, extra low phosphorus |
| C10800 | Oxygen-free, low phosphorus |
| C12000 | Phosphorus deoxidized, low residual phosphorus |
| C12200 | Phosphorus deoxidized, high residual phosphorus |